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990-4049
Installation Guide APC Silcon 240-320kW 480V UPS 49
5.2 System Configuration
System configuration parameters are vital for correct system operation and are password-
protected.
Incorrect programming may damage battery or cause output voltage to be lost during
operation!
System Configuration Parameters (password protected)
Parameter Setting* Comments
Isolation Transformer
Input
YES, NO YES, if optional input isolation transformer is
available
Isolation Transformer
Output
YES, NO YES, if optional output isolation transformer is
available
Delta Soft Start Time 1, 10, 20, 40 sec. Input current switching in ramp function. Use
higher values for smaller/unstable diesel
generators
External SSW available YES, NO YES for systems with external static bypass
switch
Normal Charge Voltage 410-460V
438V
Setting of float charge voltage at 20°C/68°F
(Automatic compensation for temperature
deviations)
Boost Charge Voltage 438-460V
438V
Setting of boost charge voltage at 20°C/68°F
(Automatic compensation for temperature
deviations)
Low Battery warning 336-384V
346V
Discharged Battery warning
Low Battery shut-down 310-336V
326V
Switches off system at minimum permissible
battery voltage
Synchronization 0.25, 0.5, 1, 2, 4
Hz/sec.
Synchronization speed. Higher values used at
unstable utility frequencies.
High Battery Temperature 15-40°C/59-
104°F
35°C/95°F
Alarm - Ambient battery temperature too high
Common fault delay 0, 10, 20,
30 sec.
Delay before common fault alarm relay is
activated
Reset operation mode lock YES, NO YES resets system locked in bypass or battery
operation mode caused by system failures (only
applicable for service personnel)
Expected back-up time
(min.)
0.1-999.9
5.0
Expected UPS back-up time in minutes when
running at 100% ohmic load. Time used by
ABM**
Battery Capacity in (Ah) 0.1-999.9
7.0
Total Battery capacity in Ah.
Setting used by ABM**.
Highest Station Address 2-9 Highest station address in parallel system
Station Address 1-9 Station address in parallel system
* Bold text refers to standard factory setting
**Advanced Battery Monitor